{"product_id":"marco-mainspring-2997-for-tavalles-caliber-719-to-779-steel","title":"Marco Mainspring #2779 for Tavannes caliber 719 to 779 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e steel mainspring No.2779 for Tavannes 17 ligne caliber 719, 758, 764, 768, 774, 777, 778, 779 movements and perhaps others, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":47958961750324,"sku":"PMS-CEM2779S-03","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-03-01_17.14.46.jpg?v=1740878128","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-2997-for-tavalles-caliber-719-to-779-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}